Center controller reported working 3 sectors combined during the covid-19 pandemic and did not point...

Narrative:

Working [3 sectors] combined. Had a brief period where volume/complexity exploded. This aircraft was a ZZZ arrival from the west. We pointed out the aircraft to ZZZ1 approach to get him away from ZZZ2; where all the conflicts were. I later observed the aircraft 5-10 miles inside ZZZ3 approach airspace without a handoff.aside from just the bump in traffic level; the frequency congestion was horrible. Center has been worse than normal during the pandemic in complying with the LOA. We are getting ZZZ4 area landers above FL300. Also; aircraft had been auto-flashing to ZZZ3 above FL240 all day because flight data (or whoever) didn't run the text file to turn off zzzzz intersection the last time it was active. We had no supervisor and nobody was answering flight data. As a result I had dis-inhibited the auto-flash to ZZZ3.I really wish we could use cross coupling where available to eliminate pilots stepping on each other.

Original NASA ASRS Text

Title: Center Controller reported working 3 sectors combined during the COVID-19 pandemic and did not point out an aircraft resulting in an airspace violation.

Narrative: Working [3 sectors] combined. Had a brief period where volume/complexity exploded. This aircraft was a ZZZ arrival from the west. We pointed out the aircraft to ZZZ1 approach to get him away from ZZZ2; where all the conflicts were. I later observed the aircraft 5-10 miles inside ZZZ3 approach airspace without a handoff.Aside from just the bump in traffic level; the frequency congestion was horrible. Center has been worse than normal during the pandemic in complying with the LOA. We are getting ZZZ4 area landers above FL300. Also; aircraft had been auto-flashing to ZZZ3 above FL240 all day because flight data (or whoever) didn't run the text file to turn off ZZZZZ Intersection the last time it was active. We had no Supervisor and nobody was answering flight data. As a result I had dis-inhibited the auto-flash to ZZZ3.I really wish we could use cross coupling where available to eliminate pilots stepping on each other.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1741998
Time
Date	202005
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 135
Flight Phase	Descent
Flight Plan	IFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 10
Events
Anomaly	ATC Issue All Types Airspace Violation All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Center controller reported working 3 sectors combined during the covid-19 pandemic and did not point out an aircraft resulting in an airspace violation.